# Service bulletin FSB\-284\-044

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10054473
- Published by NHTSA: 2014\-01\-29
- Manufacturer's number: FSB\-284\-044
- Manufacturer's date: 2013\-09\-01
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## NHTSA's summary

MACK TRUCKS: UNDER CERTAIN CONDITIONS, SOME TRUCKS MAY HAVE EXPERIENCE REGENERATION SERVICE FAILURES, THAT INCLUDE HIGHER TURBOCHARGER WHEEL SPEED, HIGHER BOOST PRESSURE, HIGH ENGINE LOAD, UNEVEN ENGINE SPEED AND LOW T2 TEMPERATURES ON ENGINES. MODEL 2011\-2013 CXU, GU. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Exhaust and emissions

## Vehicles listed

- 2012 to 2013 MACK GRANITE \(GU\)
- 2011 MACK GU
- 2011 to 2013 MACK PINNACLE \(CXU\)

JSON: [/v1/bulletins/10054473](/v1/bulletins/10054473)

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